package com.lion.repository.controller;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.RuntimeService;
import org.activiti.engine.TaskService;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.repository.ProcessDefinition;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RequestMapping("/demo")
public class DemoController {
	@Autowired  
	private RepositoryService repositoryService; 
	@Autowired  
	private RuntimeService runtimeService;  
	@Autowired  
	private TaskService taskService;  
	
	@RequestMapping("/firstDemo")
	public void firstDemo() {
 
		//根据bpmn文件部署流程
		Deployment deployment = repositoryService.createDeployment().addClasspathResource("demo2.bpmn").deploy();
		//获取流程定义
		ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery().deploymentId(deployment.getId()).singleResult();
		//启动流程定义，返回流程实例
		ProcessInstance pi = runtimeService.startProcessInstanceById(processDefinition.getId());
		String processId = pi.getId();
		System.out.println("流程创建成功，当前流程实例ID："+processId);
		
		Task task=taskService.createTaskQuery().processInstanceId(processId).singleResult();
		System.out.println("第一次执行前，任务名称："+task.getName());
		taskService.complete(task.getId());
 
		task = taskService.createTaskQuery().processInstanceId(processId).singleResult();
		System.out.println("第二次执行前，任务名称："+task.getName());
		taskService.complete(task.getId());
 
		task = taskService.createTaskQuery().processInstanceId(processId).singleResult();
		System.out.println("task为null，任务执行完毕："+task);
	}
}